JPH0750581Y2 - Papermaking roll - Google Patents
Papermaking rollInfo
- Publication number
- JPH0750581Y2 JPH0750581Y2 JP1989072592U JP7259289U JPH0750581Y2 JP H0750581 Y2 JPH0750581 Y2 JP H0750581Y2 JP 1989072592 U JP1989072592 U JP 1989072592U JP 7259289 U JP7259289 U JP 7259289U JP H0750581 Y2 JPH0750581 Y2 JP H0750581Y2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- rubber layer
- lower layer
- layer
- papermaking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Paper (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案はプレスボトムロール，スムーザーロール，ゲー
トロールコーターのアプリケーターロール，キャストコ
ーターのフォーミングロール等に関し、特にサイズプレ
ス装置の押付け用ロールとして用いられる製紙用ロール
に係わる。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a press bottom roll, a smoother roll, an applicator roll of a gate roll coater, a forming roll of a cast coater, etc., and is particularly used as a pressing roll of a size press device. Related to papermaking rolls.
［従来の技術］ 周知の如く、製紙用として用いられるサイズプレス装置
としては、例えば第３図に示す構造のものが知られてい
る。図中の１は、固定された硬質ロールである。この硬
質ロール１の近くには、該ロール１と対向して押付け用
ロール２が配置されている。これらロール1,2により紙
３の表面にサイズ剤４が塗布される。この押付けロール
には従来一般の合成ゴム製のロールが使用されていた
が、耐摩耗性をよくするためにウレタンゴム製のロール
が使用されてきている。[Prior Art] As is well known, as a size press device used for papermaking, for example, one having a structure shown in FIG. 3 is known. In the figure, 1 is a fixed hard roll. A pressing roll 2 is arranged near the hard roll 1 so as to face the roll 1. The sizing agent 4 is applied to the surface of the paper 3 by the rolls 1 and 2. A conventional synthetic rubber roll has been used as the pressing roll, but a urethane rubber roll has been used to improve wear resistance.
ところで、この製紙用ウレタンロールは、第４図に示す
如く、芯金５と、この芯金５の外周面に順次設けられた
樹脂製又は硬質ゴム製の下部層6,ウレタンゴム層（表
層）７とから構成されている。なお、図中の点線部分
は、ロールが膨張，膨潤したときのウレタンゴム層７の
形状を示す。By the way, as shown in FIG. 4, this urethane roll for papermaking includes a cored bar 5, a resin-made or hard rubber-made lower layer 6 and an urethane rubber layer (surface layer) which are sequentially provided on the outer peripheral surface of the cored bar 5. 7 and 7. The dotted line in the figure shows the shape of the urethane rubber layer 7 when the roll expands and swells.
［考案が解決しようとする課題］ しかしながら、従来の製紙用ウレタンロールによれば、
ウレタンゴム層７のウレタンの線膨張係数が一般にゴム
より大きく、かつサイズ剤４による膨潤量も大きいた
め、たとえウレタンゴム層７の表面の形状を適正なクラ
ウンをつけて使用しても、使用時にロールの両端部より
サイズ剤４が漏れるという問題点を有する（第７図図
示）。[Problems to be Solved by the Invention] However, according to the conventional urethane roll for papermaking,
In general, the urethane linear expansion coefficient of urethane of the urethane rubber layer 7 is larger than that of rubber, and the swelling amount of the sizing agent 4 is also large. Therefore, even when the urethane rubber layer 7 is used with an appropriate crown on the surface, There is a problem that the sizing agent 4 leaks from both ends of the roll (shown in FIG. 7).
こうしたことから、サイズ剤の漏れを抑制するためにロ
ールの圧力を上げてニップをとる手段がとられている。
しかし、ロール表面が均一ニップでないため、ロール中
央部と両端部で塗布ムラが生じるという問題点を有す
る。For this reason, in order to suppress the leakage of the sizing agent, a means for increasing the pressure of the roll and taking a nip is adopted.
However, since the roll surface is not a uniform nip, there is a problem that coating unevenness occurs at the center and both ends of the roll.
本考案は上記事情に鑑みてなされたもので、下部層の両
端部に適宜な形状のテーパ部を設けることにより、従来
と比べて膨潤時にロール表面の中央部と両端部での外径
差を少なくしてサイズ剤の漏れを防止し、塗布ムラのな
い製紙用ロールを提供することを目的とする。The present invention has been made in view of the above circumstances.By providing tapered portions of appropriate shapes at both ends of the lower layer, the difference in outer diameter between the central portion and both ends of the roll surface at the time of swelling can be reduced compared to the conventional case. It is an object of the present invention to provide a papermaking roll which is reduced in amount to prevent leakage of a sizing agent and has no coating unevenness.
［課題を解決するための手段］ 本考案は、芯金の外周面に樹脂製又は硬質ゴム製の下部
層、及び表面ゴム層としてのウレタンゴム層又は尿素ゴ
ム層を順次積層してなる製紙用ロールにおいて、少なく
とも下部層の両端から20mm以上でかつ下部層外周面から
2mm以上の厚さにわたってテーパ部が形成され、このテ
ーパ部に対応する前記表面ゴム層部分が中心部に比べて
厚く形成されていることを特徴とする製紙用ロールであ
る。しかるに、上記数値の範囲を外れると、サイズ剤の
漏れが生じ、塗布ムラを十分防止できない。[Means for Solving the Problems] The present invention is for papermaking in which a lower layer made of resin or hard rubber and a urethane rubber layer or a urea rubber layer as a surface rubber layer are sequentially laminated on the outer peripheral surface of a cored bar. In the roll, at least 20 mm from both ends of the lower layer and from the outer surface of the lower layer
A roll for papermaking, wherein a taper portion is formed over a thickness of 2 mm or more, and the surface rubber layer portion corresponding to the taper portion is formed thicker than the central portion. However, when the value is out of the above range, the sizing agent leaks, and uneven coating cannot be sufficiently prevented.
本発明において、ウレタンゴム，尿素ゴムとしては夫々
主鎖中に親水性基であるエーテル，エステルを有するも
のが挙げられる。又、上記ウレタンゴム，尿素ゴムは、
夫々線膨張係数が1.5×10−４以上でかつサイズ剤によ
る膨張量が1.5％以上のものが望ましい。本発明におい
て、前記テーパ部はクラウンでもよい。In the present invention, as the urethane rubber and the urea rubber, those having an ether or an ester which is a hydrophilic group in the main chain can be mentioned respectively. The urethane rubber and urea rubber are
It is desirable that each has a linear expansion coefficient of 1.5 × 10 −4 or more and an expansion amount of 1.5% or more due to the sizing agent. In the present invention, the tapered portion may be a crown.
［作用］ 本考案では、表面層に比べ線膨張係数及び膨潤が小さい
樹脂製又は硬質ゴム製の下部層の両端に適宜な形状のテ
ーパ部を設け、これにより表面ゴム層の両端部の厚みを
中央部よりも厚くしている。その結果、表面ゴム層の線
膨張係数，膨潤率は中央と端部で同じであるが、端部の
厚みが中央部と比較して厚いために膨張量，膨潤量の絶
対値は大きくなり、面長方向の膨張，膨潤を差し引いて
も外径方向の膨張，膨潤量が中央部と端部で差は少なく
なりサイズ剤の漏れを防止し、塗布ムラを回避できる。[Operation] In the present invention, a taper portion having an appropriate shape is provided at both ends of a resin or hard rubber lower layer having a smaller linear expansion coefficient and swelling than that of the surface layer, so that the thickness of both end portions of the surface rubber layer can be reduced. It is thicker than the central part. As a result, the linear expansion coefficient and the swelling rate of the surface rubber layer are the same in the center and the end, but the absolute values of the expansion and the swelling are large because the thickness of the end is thicker than that of the center. Even if the expansion and swelling in the surface length direction are subtracted, the difference in the expansion and swelling amount in the outer diameter direction between the central part and the end part is reduced, and the size agent is prevented from leaking and uneven coating can be avoided.
［実施例］ 以下、本考案の一実施例を第１図を参照して説明する。[Embodiment] An embodiment of the present invention will be described below with reference to FIG.
図中の11は、芯金としての鉄芯である。この鉄芯11の外
周面には、例えば樹脂製の下部層12,ウレタンゴム層
（表層）13が設けられている。ここで、下部層（又はゴ
ム層）の全長（L1）は2500mm、前記芯金11の直径（Ｄ）
は例えば450φ、下部層12の厚み（H1）は例えば5mm、ウ
レタンゴム層13の厚み（H2）は15mmである。前記下部層
12の両端面から距離（L2）で外周面から厚み（H3）にか
けてテーパ部14a,14bが形成されている。Reference numeral 11 in the figure is an iron core as a core metal. On the outer peripheral surface of the iron core 11, for example, a resin lower layer 12 and a urethane rubber layer (surface layer) 13 are provided. Here, the total length (L 1 ) of the lower layer (or rubber layer) is 2500 mm, the diameter of the core metal 11 (D)
Is 450φ, the lower layer 12 has a thickness (H 1 ) of 5 mm, and the urethane rubber layer 13 has a thickness (H 2 ) of 15 mm. The lower layer
Tapered portions 14a and 14b are formed at a distance (L 2 ) from both end surfaces of 12 and from the outer peripheral surface to the thickness (H 3 ).
こうした構成の製紙用ロールは、次のようして製作され
る。The papermaking roll having such a structure is manufactured as follows.
まず、表面をブラスト処理した鉄芯11を貫通させた注
型用モールドを用意する。次に、120℃の温度で脱水処
理されたポリエーテルポリオール（商品名；サンニック
HD402、三洋化成（株）製）100重量部を混合機に投入し
た。つづいて、ジフェニルメタンジイソシアナート（商
品名；ミリオネートMT、日本ポリウレタン社製）100重
量部を投入すると同時に、乾燥された石英粉末（商品
名；クリスタライトＡ−１、（株）龍森製）を200重量
部添加し、５分間減圧下で撹拌した。First, a casting mold in which the iron core 11 whose surface is blasted is penetrated is prepared. Next, polyether polyol dehydrated at a temperature of 120 ° C (trade name; Sannik
100 parts by weight of HD402 and Sanyo Kasei Co., Ltd. were put into the mixer. Subsequently, 100 parts by weight of diphenylmethane diisocyanate (trade name; Millionate MT, manufactured by Nippon Polyurethane Company) was added, and at the same time, dried quartz powder (trade name: Crystallite A-1, manufactured by Tatsumori Co., Ltd.) was added. 200 parts by weight was added, and the mixture was stirred under reduced pressure for 5 minutes.
次に、この混合物を上記注型用モールドに注入し、90
℃×5hr加熱して硬化を完了させた後、生成した硬化物
を上記モールドから取出した。次いで、常法により、鉄
芯の外周面に形成した硬化物の表面研磨を行なって第１
図に示すようなテーパ部14a,14bを形成した後、鉄芯を
別の注型用モールドに型組した。The mixture is then poured into the casting mold and the 90
After heating at ℃ × 5hr to complete the curing, the resulting cured product was taken out from the mold. Then, the surface of the hardened material formed on the outer peripheral surface of the iron core is polished by a conventional method to
After forming the tapered portions 14a and 14b as shown in the figure, the iron core was assembled into another casting mold.
次に、プレポリマー（商品名；アジプピンＬ−167、D
u Pont（株）製）100重量部を80℃に加熱し撹拌機に投
入し、更に120℃に加熱した33′−ジクロロ44′−ジア
ミノジフェニルメタン（商品名；パンデックスＥ、大日
本インキ（株）製）16.5重量部を投入した後、２分間撹
拌した。次いで、前記混合物を上記モールドに注入し、
100℃で24時間加熱し完全に硬化させた後、型より取出
す。つづいて、常法により表面研磨を行なって、鉄芯11
の外周面に下部層12を介してウレタンゴム層13を形成
し、製紙用ロール15を製作した。Next, prepolymer (trade name; adippine L-167, D
100 parts by weight of u Pont Co., Ltd., heated to 80 ° C., charged into a stirrer, and further heated to 120 ° C. 33′-dichloro 44′-diaminodiphenylmethane (trade name: Pandex E, Dainippon Ink and Co., Ltd. )) 16.5 parts by weight was added and the mixture was stirred for 2 minutes. Then, the mixture is poured into the mold,
After heating at 100 ° C for 24 hours to completely cure, remove from the mold. Then, the surface is polished by the usual method, and the iron core 11
A urethane rubber layer 13 was formed on the outer peripheral surface of the sheet with a lower layer 12 interposed therebetween to produce a papermaking roll 15.
上記実施例に係る製紙用ロールによれば、鉄芯11の外周
面に樹脂製の下部層12,ウレタンゴム層（表層）13を夫
々設け、かつ下部層12の両端面から距離（L2）で外周面
から厚み（H3）にかけてテーパ部14a,14bを形成した構
成となっているため、下部層11のテーパ部14a,14bに対
応したウレタンゴム層13の両端部は中央部に比べて厚み
が厚くなっている。第２図は、膨張時の本発明に係る製
紙用ロールの状態を示す。According to the papermaking roll of the above example, the resin lower layer 12 and the urethane rubber layer (surface layer) 13 are provided on the outer peripheral surface of the iron core 11, and the distance (L 2 ) from both end surfaces of the lower layer 12 is provided. Since the taper parts 14a, 14b are formed from the outer peripheral surface to the thickness (H 3 ), both ends of the urethane rubber layer 13 corresponding to the taper parts 14a, 14b of the lower layer 11 are compared to the central part. The thickness is getting thicker. FIG. 2 shows the state of the papermaking roll according to the present invention when expanded.
事実、上記実施例に係るロール及び従来ロールを使用し
たところ、従来ロールは４時間後に両端面よりサイズ剤
の漏れが発生した（第７図図示）が、本考案ロールによ
れば１ケ月使用しても漏れは発生しなかった。同様にし
て尿素ゴムを表面ゴム層に用いた場合にも同等の結果が
得られた。In fact, when the roll according to the above-mentioned embodiment and the conventional roll were used, the conventional roll leaked the sizing agent from both end surfaces after 4 hours (see FIG. 7), but according to the roll of the present invention, it was used for one month. However, no leak occurred. Similarly, similar results were obtained when urea rubber was used for the surface rubber layer.
なお、本考案に係るロールの下部層の両端の形状は、上
記実施例（第１図図示）に示す構造のものに限らない。
例えば、第５図に示す如く両端部から中央部にかけて徐
徐に（放物線状に）厚みを大きくした構造のロール、あ
るいは第６図に示す如く両端部から中央部付近にかけて
徐徐に（直線状に）厚みを増した構造のロール等でもよ
い。The shape of both ends of the lower layer of the roll according to the present invention is not limited to the structure shown in the above embodiment (shown in FIG. 1).
For example, as shown in FIG. 5, a roll having a structure in which the thickness is gradually increased (parabolic) from both ends to the central part, or gradually (in a straight line) from both ends to the central part as shown in FIG. A roll having an increased thickness may be used.
上記実施例では下部層が樹脂製である場合について述べ
たが、これに限らず、例えば硬質ゴム製であってもよ
い。Although the case where the lower layer is made of resin has been described in the above embodiment, the present invention is not limited to this, and may be made of hard rubber, for example.
上記実施例では表面ゴム層としてウレタンゴム層を用い
た場合について述べたが、これに限らず、尿素ゴム層を
用いても同様な結果が得られた。In the above examples, the case where the urethane rubber layer is used as the surface rubber layer has been described, but the present invention is not limited to this, and the same result is obtained even when the urea rubber layer is used.
［考案の効果］ 以上詳述した如く本考案によれば、下部層の両端部に適
宜な形状のテーパ部を設けることにより、従来と比べて
膨潤，膨張時のロール表面の中央部と両端部での外径差
を少なくしてサイズ剤の漏れを防止しえ、塗布ムラのな
い信頼性の高い製紙用ロールを提供できる。[Advantage of the Invention] As described in detail above, according to the present invention, by providing the tapered portions of appropriate shapes at both ends of the lower layer, the central portion and both end portions of the roll surface at the time of swelling and expanding compared to the conventional case are provided. It is possible to provide a highly reliable papermaking roll that can prevent leakage of the sizing agent by reducing the difference in outer diameter between the rolls and has no coating unevenness.
第１図は本考案に係る製紙用ロールの説明図、第２図は
同ロールの膨張時の説明図、第３図はサイズプレス装置
の説明図、第４図は従来の製紙用ロールの説明図、第５
図及び第６図は夫々本考案の製紙用ロールのその他の例
を示す説明図、第７図は従来のロールのサイズ剤の漏れ
の説明図である。 11…鉄芯（芯金）、12…下部層、13…ウレタンゴム層、
14a,14b…テーパ部、15…製紙用ロール。FIG. 1 is an explanatory view of a papermaking roll according to the present invention, FIG. 2 is an explanatory view of the roll when expanded, FIG. 3 is an explanatory view of a size press device, and FIG. 4 is an explanation of a conventional papermaking roll. Figure, fifth
FIG. 6 and FIG. 6 are explanatory views showing another example of the papermaking roll of the present invention, and FIG. 7 is an explanatory diagram of leakage of the sizing agent of the conventional roll. 11 ... Iron core (core metal), 12 ... Lower layer, 13 ... Urethane rubber layer,
14a, 14b ... tapered part, 15 ... roll for papermaking.
Claims (1)
部層、及び表面ゴム層としてのウレタンゴム層又は尿素
ゴム層を順次積層してなる製紙用ロールにおいて、少な
くとも下部層の両端から20mm以上でかつ下部層外周面か
ら2mm以上の厚さにわたってテーパ部が形成され、この
テーパ部に対応する前記表面ゴム層部分が中心部に比べ
て厚く形成されていることを特徴とする製紙用ロール。1. A papermaking roll having a lower layer made of resin or hard rubber, and a urethane rubber layer or a urea rubber layer as a surface rubber layer, which are sequentially laminated on the outer peripheral surface of a core metal, and at least both ends of the lower layer. To 20 mm or more and a taper portion is formed over a thickness of 2 mm or more from the outer peripheral surface of the lower layer, and the surface rubber layer portion corresponding to the taper portion is formed thicker than the central portion. For rolls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989072592U JPH0750581Y2 (en) | 1989-06-21 | 1989-06-21 | Papermaking roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989072592U JPH0750581Y2 (en) | 1989-06-21 | 1989-06-21 | Papermaking roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0312613U JPH0312613U (en) | 1991-02-08 |
| JPH0750581Y2 true JPH0750581Y2 (en) | 1995-11-15 |
Family
ID=31610661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989072592U Expired - Lifetime JPH0750581Y2 (en) | 1989-06-21 | 1989-06-21 | Papermaking roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750581Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4836541A (en) * | 1971-09-13 | 1973-05-30 |
-
1989
- 1989-06-21 JP JP1989072592U patent/JPH0750581Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4836541A (en) * | 1971-09-13 | 1973-05-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0312613U (en) | 1991-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |